Corning Pyrex 5641-250 Borosilicate Glass 250mL Volumetric Flask with Standard Taper Stopper - Class B, Flat Bottom, ±0.24mL Accuracy (Pack of 6) - Ideal for Chemistry Labs, Scientific Experiments & Liquid Measurements

These 250mL PYREX economy flasks are designed for those that do not require the precision accuracy of our Class A capacity flasks. Capacity tolerances are twice those specified for Class A volumetric ware. The graduation line is sharp and permanent; large white block letters make inscriptions easy to read. Supplied with No. 16 standard taper glass stopper. Material: borosilicate glass code 7740. Capacity: 250mL. Flask style: volumetric. Flask shape: flat bottom. Top style: standard taper stopper. Neck style: long. Flask feature: economy. Accuracy class: Class B. Tolerance: +/-0.24mL. Standard taper stopper number: No. 16. Height: 252mm. Outer diameter: 78mm. Corning #: 5641-250.